package net.slidinglive.utilities;

import net.slidinglive.utilities.adapter.SectionPagerAdapter;
import net.slidinglive.utilities.util.UtilitiesHelper;
import android.app.ActionBar;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.view.Menu;

public class MainActivity
        extends FragmentActivity
        implements ActionBar.TabListener {

    /**
     * The {@link android.support.v4.view.PagerAdapter} that will provide fragments for each of the sections. We use a
     * {@link android.support.v4.app.FragmentPagerAdapter} derivative, which will keep every loaded fragment in memory.
     * If this becomes too memory intensive, it may be best to switch to a
     * {@link android.support.v4.app.FragmentStatePagerAdapter}.
     */
    SectionPagerAdapter mSectionsPagerAdapter;

    /**
     * The {@link ViewPager} that will host the section contents.
     */
    ViewPager mViewPager;

    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        this.setContentView(R.layout.activity_main);
        // Create the adapter that will return a fragment for each of the three primary sections
        // of the app.
        this.mSectionsPagerAdapter =
                new SectionPagerAdapter(this.getSupportFragmentManager(), UtilitiesHelper.createPages(this));

        // Set up the action bar.
        final ActionBar actionBar = this.getActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        // Set up the ViewPager with the sections adapter.
        this.mViewPager = (ViewPager) this.findViewById(R.id.pager);
        this.mViewPager.setAdapter(this.mSectionsPagerAdapter);

        // When swiping between different sections, select the corresponding tab.
        // We can also use ActionBar.Tab#select() to do this if we have a reference to the
        // Tab.
        this.mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
            @Override
            public void onPageSelected(int position) {

                actionBar.setSelectedNavigationItem(position);
            }
        });

        // For each of the sections in the app, add a tab to the action bar.
        for (int i = 0; i < this.mSectionsPagerAdapter.getCount(); i++) {
            // Create a tab with text corresponding to the page title defined by the adapter.
            // Also specify this Activity object, which implements the TabListener interface, as the
            // listener for when this tab is selected.
            actionBar.addTab(actionBar.newTab().setText(this.mSectionsPagerAdapter.getPageTitle(i))
                    .setTabListener(this));
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {

        this.getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

    @Override
    public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {

    }

    @Override
    public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {

        // When the given tab is selected, switch to the corresponding page in the ViewPager.
        this.mViewPager.setCurrentItem(tab.getPosition());
    }

    @Override
    public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {

    }
}
